/* 
 * Mach Operating System
 * Copyright (c) 1991,1990 Carnegie Mellon University
 * All Rights Reserved.
 * 
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 * 
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 * 
 * any improvements or extensions that they make and grant Carnegie Mellon
 * the rights to redistribute these changes.
 */
/*
 * Copyright (c) 1982, 1989 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *	@(#)inode.h	7.5 (Berkeley) 7/3/89
 */

#ifndef	_BOOT_UFS_DISK_INODE_H_
#define	_BOOT_UFS_DISK_INODE_H_

/*
 * The I node is the focus of all file activity in the BSD Fast File System.
 * There is a unique inode allocated for each active file,
 * each current directory, each mounted-on file, text file, and the root.
 * An inode is 'named' by its dev/inumber pair. (iget/iget.c)
 * Data in icommon is read in from permanent inode on volume.
 */

#define	FFS_NDADDR	12	/* direct addresses in inode */
#define	FFS_NIADDR	3	/* indirect addresses in inode */

#define	FFS_MAX_FASTLINK_SIZE	((FFS_NDADDR + FFS_NIADDR) * sizeof(daddr_t))

struct 	icommon {
	u_short	ic_mode;	/*  0: mode and type of file */
	short	ic_nlink;	/*  2: number of links to file */
	uid_t	ic_uid;		/*  4: owner's user id */
	gid_t	ic_gid;		/*  6: owner's group id */
	quad	ic_size;	/*  8: number of bytes in file */
	time_t	ic_atime;	/* 16: time last accessed */
	int	ic_atspare;
	time_t	ic_mtime;	/* 24: time last modified */
	int	ic_mtspare;
	time_t	ic_ctime;	/* 32: last time inode changed */
	int	ic_ctspare;
	union {
	    struct {
		daddr_t	Mb_db[FFS_NDADDR];	/* 40: disk block addresses */
		daddr_t	Mb_ib[FFS_NIADDR];	/* 88: indirect blocks */
	    } ic_Mb;
	    char	ic_Msymlink[FFS_MAX_FASTLINK_SIZE];
					/* 40: symbolic link name */
	} ic_Mun;
#define	ic_db		ic_Mun.ic_Mb.Mb_db
#define	ic_ib		ic_Mun.ic_Mb.Mb_ib
#define	ic_symlink	ic_Mun.ic_Msymlink
	int	ic_flags;	/* 100: status, currently unused */
	int	ic_blocks;	/* 104: blocks actually held */
	int	ic_gen;		/* 108: generation number */
	int	ic_spare[4];	/* 112: reserved, currently unused */
} i_ic;

/*
 *	Same structure, but on disk.
 */
struct dinode {
	union {
	    struct icommon	di_com;
	    char		di_char[128];
	} di_un;
};
#define	di_ic	di_un.di_com

#endif	/* _BOOT_UFS_DISK_INODE_H_ */
